Investigation of high duty factor ISR RFQ-1000 $
Investigation of high duty factor ISR RFQ-1000 $
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DOI：
10.1016/j.nima.2003.07.025
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发表时间：
2003-12
影响因子：
1.4
通讯作者：
Yuanrong Lu;C. E. Chen;J. Fang;Shuli Gao;Jimei Guo;Zhiyu Guo;Dongyu Li;Wei Li;O. J. Pan;X. Ren;Yue-fang Wu;Xueqing Yan;Jinxiang Yu;M. Yu;U. Ratzinger;H. Deitinghoff;H. Klein;A. Schempp
中科院分区：
文献类型：
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作者：
Yuanrong Lu;C. E. Chen;J. Fang;Shuli Gao;Jimei Guo;Zhiyu Guo;Dongyu Li;Wei Li;O. J. Pan;X. Ren;Yue-fang Wu;Xueqing Yan;Jinxiang Yu;M. Yu;U. Ratzinger;H. Deitinghoff;H. Klein;A. Schempp
北京大学重离子物理研究所为重离子注入应用设计了两个高占空比16.7%的积分裂环RFQ。安装了两种具有永久磁铁和LEBT的猪离子源，并对其进行了优化，以便注入到这两个RFQ中。正O+和负O−离子分别被提取并同时加速。在传输效率大于82%的情况下，输出的宏脉冲O−束流达到660μA。在相同的传输效率下，N+束也得到了加速，但由于离子源引出电流的限制，正离子的输出电流强度低于负离子。本文将介绍在1 MeV ISR RFQ上的改进，特别是对高占空比的改进和实验结果。
Two Integral Split Ring (ISR) RFQs with high duty factor of 16.7% have been designed for the application of heavy ion implantation and built in the past several years at Institute of Heavy Ion Physics (IHIP) in Peking University. Two kinds of PIG ion sources with permanent magnets and LEBT were installed and optimized for the injection into these two RFQs. The positive O+and negative O−ions were extracted and accelerated separately as well as simultaneously. The output macro pulse O−beam current reached 660μA at a transmission efficiency of more than 82%. The N+beam was also accelerated with similar transmission efficiency, but the output current intensity for positive ions were lower than the negative ions because of the extracted current limitation of ion sources. The improvements, especially for high duty factor and experimental results with the 1MeV ISR RFQ will be presented in this paper.